Chapter 8

A simple machine that has a grooved wheel that holds a rope or a cable

10.

The unit used to express work

11.

A device that makes work easier by changing size or direction of force

13.

A simple machine consisting of two circular objects of different sizes

14.

Joules divided by seconds

16.

A simple machine that has a bar that pivots at a fixed point

Down

2.

The work done on a machine

3.

The comparison of a machine’s work output with the work input

4.

A pair of inclined planes that move

6.

A simple machine that has a straight, slanted surface

8.

Machines that are made of two or more simple machines

12.

The fixed point in a lever

13.

The work that is done by the machine

15.

Rate at which energy is is transferred

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